yikes... catastrophic failure of an impeller at 13 hours? and then catastrophic engine failure? I thought the new MEFI's had automatic over heat shut down protection... Good news that you are getting a new engine... 13 hours...yikes would love to see a picture of the impeller - it must have disintegrated -

__________________...A bad day water skiing still beats a good day at work...1995 Pro Star 205....

I'm guessing both engine temp sensors failed as well?? They have separate sensors for the gauge and the computer. So, if the gauge only read 200, and the boat didn't go into limp mode at 220 degrees (ilmores cutoff temp for limp mode. I think 240 is shutdown temp) That means that both sensors were not working right......

The number of these posts that I read about newer Ilmor engines is very disturbing. Do they simply not have their act together for a mass production market yet? I love the power of mine, but it's overheating too (with alarm) and no one seems to know why. Ilmor is involved, MasterCraft is too...but I saw 198 yesterday after three minutes on the water and the alarm came back on (again) just one hour after leaving the shop. New impeller, raw water pump verified to be working, removed factory installed flush system, removed strainer, straight hose from boat bottom to cooler, no blockages. Higher RPMs cool it down, but it never did this before. (...and of course the touchscreen stays locked up constantly and no one knows why after many reflashes, firmware loads, traced grounds, replaced batteries, etc.)

As I sit here on land with my family over the 4th of July, I really miss my Indmar 5.7 with a classic analog dash.